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SSC Clinic: Can Implementing "Optimize for Ad Hoc Queries" Boost Performance for the SQLServerCentral.com and Simple-Talk.Com SQL Servers?

With the introduction of the instance-level option “optimize for ad hoc workloads” in SQL Server 2008, DBAs have a tool to deal with a problem known as plan cache pollution, or plan cache bloat. It’s often caused when one-time use ad hoc queries are sent to SQL Server from Object-Relational Mapping (ORM) solutions, such as LINQ, NHibernate, or Entity Framework. The problem can prevent SQL Server from using its available memory optimally, potentially hurting performance. Get smart with SQL Backup ProGet faster, smaller backups with integrated verification.Quickly and easily DBCC CHECKDB your backups. Learn more.

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Quadratic Programming with Oracle R Enterprise

- by Jeff Taylor-Oracle

I wanted to use quadprog with ORE on a server running Oracle Solaris 11.2 on a Oracle SPARC T-4 server For background, see: Oracle SPARC T4-2 http://docs.oracle.com/cd/E23075_01/ Oracle Solaris 11.2 http://www.oracle.com/technetwork/server-storage/solaris11/overview/index.html quadprog: Functions to solve Quadratic Programming Problems http://cran.r-project.org/web/packages/quadprog/index.html Oracle R Enterprise 1.4 ("ORE") 1.4 http://www.oracle.com/technetwork/database/options/advanced-analytics/r-enterprise/ore-downloads-1502823.html Problem: path to Solaris Studio doesn't match my installation: $ ORE CMD INSTALL quadprog_1.5-5.tar.gz * installing to library \u2018/u01/app/oracle/product/12.1.0/dbhome_1/R/library\u2019 * installing *source* package \u2018quadprog\u2019 ... ** package \u2018quadprog\u2019 successfully unpacked and MD5 sums checked ** libs /opt/SunProd/studio12u3/solarisstudio12.3/bin/f95 -m64 -PIC -g -c aind.f -o aind.o bash: /opt/SunProd/studio12u3/solarisstudio12.3/bin/f95: No such file or directory *** Error code 1 make: Fatal error: Command failed for target `aind.o' ERROR: compilation failed for package \u2018quadprog\u2019 * removing \u2018/u01/app/oracle/product/12.1.0/dbhome_1/R/library/quadprog\u2019 $ ls -l /opt/solarisstudio12.3/bin/f95 lrwxrwxrwx 1 root root 15 Aug 19 17:36 /opt/solarisstudio12.3/bin/f95 -> ../prod/bin/f90 Solution: a symbolic link: $ sudo mkdir -p /opt/SunProd/studio12u3 $ sudo ln -s /opt/solarisstudio12.3 /opt/SunProd/studio12u3/ Now, it is all good: $ ORE CMD INSTALL quadprog_1.5-5.tar.gz * installing to library \u2018/u01/app/oracle/product/12.1.0/dbhome_1/R/library\u2019 * installing *source* package \u2018quadprog\u2019 ... ** package \u2018quadprog\u2019 successfully unpacked and MD5 sums checked ** libs /opt/SunProd/studio12u3/solarisstudio12.3/bin/f95 -m64 -PIC -g -c aind.f -o aind.o /opt/SunProd/studio12u3/solarisstudio12.3/bin/ cc -xc99 -m64 -I/usr/lib/64/R/include -DNDEBUG -KPIC -xlibmieee -c init.c -o init.o /opt/SunProd/studio12u3/solarisstudio12.3/bin/f95 -m64 -PIC -g -c -o solve.QP.compact.o solve.QP.compact.f /opt/SunProd/studio12u3/solarisstudio12.3/bin/f95 -m64 -PIC -g -c -o solve.QP.o solve.QP.f /opt/SunProd/studio12u3/solarisstudio12.3/bin/f95 -m64 -PIC -g -c util.f -o util.o /opt/SunProd/studio12u3/solarisstudio12.3/bin/ cc -xc99 -m64 -G -o quadprog.so aind.o init.o solve.QP.compact.o solve.QP.o util.o -xlic_lib=sunperf -lsunmath -lifai -lsunimath -lfai -lfai2 -lfsumai -lfprodai -lfminlai -lfmaxlai -lfminvai -lfmaxvai -lfui -lfsu -lsunmath -lmtsk -lm -lifai -lsunimath -lfai -lfai2 -lfsumai -lfprodai -lfminlai -lfmaxlai -lfminvai -lfmaxvai -lfui -lfsu -lsunmath -lmtsk -lm -L/usr/lib/64/R/lib -lR installing to /u01/app/oracle/product/12.1.0/dbhome_1/R/library/quadprog/libs ** R ** preparing package for lazy loading ** help *** installing help indices converting help for package \u2018quadprog\u2019 finding HTML links ... done solve.QP html solve.QP.compact html ** building package indices ** testing if installed package can be loaded * DONE (quadprog) ====== Here is an example from http://cran.r-project.org/web/packages/quadprog/quadprog.pdf > require(quadprog) > Dmat <- matrix(0,3,3) > diag(Dmat) <- 1 > dvec <- c(0,5,0) > Amat <- matrix(c(-4,-3,0,2,1,0,0,-2,1),3,3) > bvec <- c(-8,2,0) > solve.QP(Dmat,dvec,Amat,bvec=bvec) $solution [1] 0.4761905 1.0476190 2.0952381 $value [1] -2.380952 $unconstrained.solution [1] 0 5 0 $iterations [1] 3 0 $Lagrangian [1] 0.0000000 0.2380952 2.0952381 $iact [1] 3 2 Here, the standard example is modified to work with Oracle R Enterprise require(ORE) ore.connect("my-name", "my-sid", "my-host", "my-pass", 1521) ore.doEval( function () { require(quadprog) } ) ore.doEval( function () { Dmat <- matrix(0,3,3) diag(Dmat) <- 1 dvec <- c(0,5,0) Amat <- matrix(c(-4,-3,0,2,1,0,0,-2,1),3,3) bvec <- c(-8,2,0) solve.QP(Dmat,dvec,Amat,bvec=bvec) } ) $solution [1] 0.4761905 1.0476190 2.0952381 $value [1] -2.380952 $unconstrained.solution [1] 0 5 0 $iterations [1] 3 0 $Lagrangian [1] 0.0000000 0.2380952 2.0952381 $iact [1] 3 2 Now I can combine the quadprog compute algorithms with the Oracle R Enterprise Database engine functionality: Scale to large datasets Access to tables, views, and external tables in the database, as well as those accessible through database links Use SQL query parallel execution Use in-database statistical and data mining functionality

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Is there a word or description for this type of query?

- by Nick

We have the requirement to find a result in a collection of records based on a prioritised set of search criteria against a relational db (I'm talking indexed field matching here rather than text search). The way we are thinking about designing the query is to begin with a highly refined and specific set of criteria. If there are no results for this initial query we want to progressively reduce the criteria one by one in order of reducing priority, querying each time such a less specific set of criteria until we find a result we can accept. Alternatively, we have considered starting with a smaller set of criteria and increasing until we have reduced number of results down to the last set. What I would like to know is if an existing term to describe this type of query exists? So that we can look to model our own on existing patterns and use best practice.

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Advice: should I focus on PHP + MySQL, or split my time for more JS and CSS? [closed]

- by fakaff

I started learning web development about three months ago (in between working my regular job), and I'm finally starting to get some vague, distant notion of understanding. I find the server-side stuff the most interesting; though I've not gone anywhere near Apache quite yet, which I assume will be necessary at some point. As cool as toying around with visuals and UI is, programming and database stuff inspires me with new ideas and possibilities every minute (I've even bought, on a whim, a wonderfully dry bunch of books on database theory and relational algebra). And whatever CSS or Javascript tutorial I'm doing, it often feels like a distraction from the PHP/MySQL stuff I'd rather be playing with. For someone like me who's just starting out, which is the most advisable course of action? (in terms of being marketable as a programmer): To focus on PHP and SQL stuff exclusively, and only once I master those to diversify my skills. To first learn all three (PHP/MySQL, Javascript, CSS and design) and only once I'm fluent in all three focus on PHP and databases?

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Writing a Data Access Layer (DAL) for SQL Server

In this tip, I am going to show you how you can create a Data Access Layer (to store, retrieve and manage data in relational database) in ADO .NET. I will show how you can make it data provider independent, so that you don't have to re-write your data access layer if the data storage source changes and also you can reuse it in other applications that you develop. Free trial of SQL Backup™“SQL Backup was able to cut down my backup time significantly AND achieved a 90% compression at the same time!” Joe Cheng. Download a free trial now.

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ComboBox Data Binding

- by Geertjan

Let's create a databound combobox, levering MVC in a desktop application. The result will be a combobox, provided by the NetBeans ChoiceView, that displays data retrieved from a database: What follows is not much different from the NetBeans Platform CRUD Application Tutorial and you're advised to consult that document if anything that follows isn't clear enough. One kind of interesting thing about the instructions that follow is that it shows that you're able to create an application where each element of the MVC architecture can be located within a separate module: Start by creating a new NetBeans Platform application named "MyApplication". Model We're going to start by generating JPA entity classes from a database connection. In the New Project wizard, choose "Java Class Library". Click Next. Name the Java Class Library "MyEntities". Click Finish. Right-click the MyEntities project, choose New, and then select "Entity Classes from Database". Work through the wizard, selecting the tables of interest from your database, and naming the package "entities". Click Finish. Now a JPA entity is created for each of the selected tables. In the Project Properties dialog of the project, choose "Copy Dependent Libraries" in the Packaging panel. Build the project. In your project's "dist" folder (visible in the Files window), you'll now see a JAR, together with a "lib" folder that contains the JARs you'll need. In your NetBeans Platform application, create a module named "MyModel", with code name base "org.my.model". Right-click the project, choose Properties, and in the "Libraries" panel, click Add Dependency button in the Wrapped JARs subtab to add all the JARs from the previous step to the module. Also include "derby-client.jar" or the equivalent driver for your database connection to the module. Controler In your NetBeans Platform application, create a module named "MyControler", with code name base "org.my.controler". Right-click the module's Libraries node, in the Projects window, and add a dependency on "Explorer & Property Sheet API". In the MyControler module, create a class with this content: package org.my.controler; import org.openide.explorer.ExplorerManager; public class MyUtils { static ExplorerManager controler; public static ExplorerManager getControler() { if (controler == null) { controler = new ExplorerManager(); } return controler; } } View In your NetBeans Platform application, create a module named "MyView", with code name base "org.my.view". Create a new Window Component, in "explorer" view, for example, let it open on startup, with class name prefix "MyView". Add dependencies on the Nodes API and on the Explorer & Property Sheet API. Also add dependencies on the "MyModel" module and the "MyControler" module. Before doing so, in the "MyModel" module, make the "entities" package and the "javax.persistence" packages public (in the Libraries panel of the Project Properties dialog) and make the one package that you have in the "MyControler" package public too. Define the top part of the MyViewTopComponent as follows: public final class MyViewTopComponent extends TopComponent implements ExplorerManager.Provider { ExplorerManager controler = MyUtils.getControler(); public MyViewTopComponent() { initComponents(); setName(Bundle.CTL_MyViewTopComponent()); setToolTipText(Bundle.HINT_MyViewTopComponent()); setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS)); controler.setRootContext(new AbstractNode(Children.create(new ChildFactory<Customer>() { @Override protected boolean createKeys(List list) { EntityManager entityManager = Persistence. createEntityManagerFactory("MyEntitiesPU").createEntityManager(); Query query = entityManager.createNamedQuery("Customer.findAll"); list.addAll(query.getResultList()); return true; } @Override protected Node createNodeForKey(Customer key) { Node customerNode = new AbstractNode(Children.LEAF, Lookups.singleton(key)); customerNode.setDisplayName(key.getName()); return customerNode; } }, true))); controler.addPropertyChangeListener(new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent evt) { Customer selectedCustomer = controler.getSelectedNodes()[0].getLookup().lookup(Customer.class); StatusDisplayer.getDefault().setStatusText(selectedCustomer.getName()); } }); JPanel row1 = new JPanel(new FlowLayout(FlowLayout.LEADING)); row1.add(new JLabel("Customers: ")); row1.add(new ChoiceView()); add(row1); } @Override public ExplorerManager getExplorerManager() { return controler; } ... ... ... Now run the application and you'll see the same as the image with which this blog entry started.

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NoSQL For The Rest Of Us

No one would blame you for strictly associating NoSQL with performance. Most of the back and forth about NoSQL - an umbrella term given for non-relational storage mechanisms - has squarely put the focus on performance, sites with massive traffic, and server farms. It’s an interesting conversation, but one that risks alienating NoSQL from the majority of developers. The Problem Does NoSQL provide us simple developers with any tangible benefit? As a matter of fact, it can - one as significant...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Stairway to T-SQL DML Level 4: The Mathematics of SQL: Part 1

A relational database contains tables that relate to each other by key values. When querying data from these related tables you may choose to select data from a single table or many tables. If you select data from many tables, you normally join those tables together using specified join criteria. The concepts of selecting data from tables and joining tables together is all about managing and manipulating sets of data. In Level 4 of this Stairway we will explore the concepts of set theory and mathematical operators to join, merge, and return data from multiple SQL Server tables. Get Smart with SQL Backup Pro Powerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school Discover why.

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Mysql query does not update row [closed]

- by Gerculy Robert

// Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // get value of id that sent from address bar /*$id=$_GET['$usrid'];*/ // Retrieve data from database $sql="SELECT * FROM user WHERE id='$usrid'"; $result=mysql_query($sql); $rows=mysql_fetch_array($result); ?> <table width="400" border="0" cellspacing="1" cellpadding="0"> <tr> <form name="form1" method="post" action="update.php"> <td> <table width="100%" border="0" cellspacing="1" cellpadding="0"> <tr> <td> </td> <td colspan="3"><strong>Update site info</strong> </td> </tr> <tr> <td align="center"> </td> <td align="center"> </td> <td align="center"> </td> <td align="center"> </td> </tr> <tr> <td align="center"> </td> <td align="center"><strong>User Name</strong></td> <td align="center"><strong>Site url</strong></td> <td align="center"><strong>Url banner</strong></td> </tr> <tr> <td> </td> <td align="center"> <input name="username" type="text" id="username" value="<? echo $rows['username']; ?>"> </td> <td align="center"> <input name="siteurl" type="text" id="siteurl" value="<? echo $rows['siteurl']; ?>" size="40"> </td> <td> <input name="urlbanner" type="text" id="urlbanner" value="<? echo $rows['urlbanner']; ?>" size="40"> </td> </tr> <tr> <td> </td> <td> <input name="id" type="hidden" id="id" value="<? echo $rows['id']; ?>"> </td> <td align="center"> <input type="submit" name="Submit" value="Submit"> </td> <td> </td> </tr> </table> </td> </form> </tr> </table> <?php // close connection mysql_close(); ?> // Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // update data in mysql database $sql="update user SET siteurl='$siteurl', username='$username', urlbanner='$urlbanner' WHERE id=$usrid"; $result=mysql_query($sql); // if successfully updated. if($result){ echo "Successful"; echo "<BR>"; echo "<a href='edit.php'>View result</a>"; } else { echo "ERROR"; } Hello, I have this two pages wich should update 3 rows. The problem is it does not update all , only 2 . I tried over 1 hour to find the problem but nothing. The row , siteurl, is not being updated at all . The table is : varchar(255) Database and session is ok. Any idea ? It's just a simple update code , should work fine :(

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Tune Your Indexing Strategy with SQL Server DMVs

SQL Server Indexes need to be effective. It is wrong to have too few or too many. The ones you create must ensure that the workload reads the data quickly with a minimum of I/O. As well as a sound knowledge of the way that relational databases work, it helps to be familiar with the Dynamic Management Objects that are there to assist with your indexing strategy. New! SQL Backup Pro 7.2 - easy, automated backup and restoresTry out the latest features and get faster, smaller, verified backups. Download a free trial.

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Getting Started with the SSAS Tabular Model

SSAS Tabular models are in-memory databases that model data with relational constructs such as tables and relationships, in order to provide a rapid and powerful way of providing self-service BI to client applications such as Microsoft Excel and Microsoft Power View. You’ve deployed SSAS in tabular mode, and deployed Adventureworks into it. What next? Rob Sheldon explains all. Check SQL Server performance at a glanceWe consulted 1000 SQL Server professionals to make SQL Monitor’s UI as clear as possible. Start monitoring with a free trial.

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Migrating RISC to x86 - endianess 'issue'

- by llaszews

Endianess always comes up when migrating applications and databases from RISC to x86. The issue is often time overblown as if you are running on a relational database the database vendor will provide tools or automated methods to convert the data properly. Oracle RMAN is often the first choice. Oracle imp/exp, data pump, and GoldenGate can also be used. Migrating to Linux on Dell A bigger issue would be applications that access OS files. These OS files will need to be converted from big endian (RISC) to little endian (CISC) and then the application may be impacted because of the endianess differences.

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MySQL Binary Storage using BLOB VS OS File System: large files, large quantities, large problems.

- by Quantico773

Hi Guys, Versions I am running (basically latest of everything): PHP: 5.3.1 MySQL: 5.1.41 Apache: 2.2.14 OS: CentOS (latest) Here is the situation. I have thousands of very important documents, ranging from customer contracts to voice signatures (recordings of customer authorisation for contracts), with file types including, but not limited to jpg, gif, png, tiff, doc, docx, xls, wav, mp3, pdf, etc. All of these documents are currently stored on several servers including Windows 32 bit, CentOS and Mac, among others. Some files are also stored on employees desktop computers and laptops, and some are still hard copies stored in hundreds of boxes and filing cabinets. Now because customers or lawyers could demand evidence of contracts at any time, my company has to be able to search and locate the correct document(s) effectively, for this reason ALL of these files have to be digitised (if not already) and correlated into some sort of order for searching and accessing. As the programmer, I have created a full Customer Relations Management tool that the whole company uses. This includes Customer Profiles management, Order and job Tracking tools, Job/sale creation and management modules, etc, and at the moment any file that is needed at a customer profile level (drivers licence, credit authority, etc) or at a job/sale level (contracts, voice signatures, etc) can be uploaded to the server and sits in a parent/child hierarchy structure, just like Windows Explorer or any other typical file managment model. The structure appears as such: drivers_license |- DL_123.jpg voice_signatures |- VS_123.wav |- VS_4567.wav contracts So the files are uplaoded using PHP and Apache, and are stored in the file system of the OS. At the time of uploading, certain information about the file(s) is stored in a MySQL database. Some of the information stored is: TABLE: FileUploads FileID CustomerID (the customer id that the file belongs to, they all have this.) JobID/SaleID (the id of the job/sale associated, if any.) FileSize FileType UploadedDateTime UploadedBy FilePath (the directory path the file is stored in.) FileName (current file name of uploaded file, combination of CustomerID and JobID/SaleID if applicable.) FileDescription OriginalFileName (original name of the source file when uploaded, including extension.) So as you can see, the file is linked to the database by the File Name. When I want to provide a customers' files for download to a user all I have to do is "SELECT * FROM FileUploads WHERE CustomerID = 123 OR JobID = 2345;" and this will output all the file details I require, and with the FilePath and FileName I can provide the link for download. http... server / FilePath / FileName There are a number of problems with this method: Storing files in this "database unconcious" environment means data integrity is not kept. If a record is deleted, the file may not be deleted also, or vice versa. Files are strewn all over the place, different servers, computers, etc. The file name is the ONLY thing matching the binary to the database and customer profile and customer records. etc, etc. There are so many reasons, some of which are described here: http://www.dreamwerx.net/site/article01 . Also there is an interesting article here too: sietch.net/ViewNewsItem.aspx?NewsItemID=124 . SO, after much research I have pretty much decided I am going to store ALL of these files in the database, as a BLOB or LONGBLOB, but there are still many considerations before I do this. I know that storing them in the database is a viable option, however there are a number of methods of storing them. I also know storing them is one thing; correlating and accessing them in a manageable way is another thing entirely. The article provided at this link: dreamwerx.net/site/article01 describes a way of splitting the uploaded binary files into 64kb chunks and storing each chunk with the FileID, and then streaming the actual binary file to the client using headers. This is a really cool idea since it alleviates preassure on the servers memory; instead of loading an entire 100mb file into the RAM and then sending it to the client, it is doing it 64kb at a time. I have tried this (and updated his scripts) and this is totally successful, in a very small frame of testing. So if you are in agreeance that this method is a viable, stable and robust long-term option to store moderately large files (1kb to couple hundred megs), and large quantities of these files, let me know what other considerations or ideas you have. Also, I am considering getting a current "File Management" PHP script that gives an interface for managing files stored in the File System and converting it to manage files stored in the database. If there is already any software out there that does this, please let me know. I guess there are many questions I could ask, and all the information is up there ^^ so please, discuss all aspects of this and we can pass ideas back and forth and teach each other. Cheers, Quantico773

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storing session data in mysql using php is not retrieving the data properly from the tables.

- by Ronedog

I have a problem retrieving some data from the $_SESSION using php and mysql. I've commented out the line in php.ini that tells the server to use the "file" to store the session info so my database will be used. I have a class that I use to write the information to the database and its working fine. When the user passes their credentials the class gets instantiated and the $_SESSION vars get set, then the user gets redirected to the index page. The index.php page includes the file where the db session class is, which when instantiated calles session_start() and the session variables should be in $_SESSION, but when I do var_dump($_SESSION) there is nothing in the array. However, when I look at the data in mysql, all the session information is in there. Its acting like session_start() has not been called, but by instantiating the class it is. Any idea what could be wrong? Here's the HTML: <?php include_once "classes/phpsessions_db/class.dbsession.php"; //used for sessions var_dump($_SESSION); ?> <html> . . . </html> Here's the dbsession class: <?php error_reporting(E_ALL); class dbSession { function dbSession($gc_maxlifetime = "", $gc_probability = "", $gc_divisor = "") { // if $gc_maxlifetime is specified and is an integer number if ($gc_maxlifetime != "" && is_integer($gc_maxlifetime)) { // set the new value @ini_set('session.gc_maxlifetime', $gc_maxlifetime); } // if $gc_probability is specified and is an integer number if ($gc_probability != "" && is_integer($gc_probability)) { // set the new value @ini_set('session.gc_probability', $gc_probability); } // if $gc_divisor is specified and is an integer number if ($gc_divisor != "" && is_integer($gc_divisor)) { // set the new value @ini_set('session.gc_divisor', $gc_divisor); } // get session lifetime $this->sessionLifetime = ini_get("session.gc_maxlifetime"); //Added by AARON. cancel the session's auto start,important, without this the session var's don't show up on next pg. session_write_close(); // register the new handler session_set_save_handler( array(&$this, 'open'), array(&$this, 'close'), array(&$this, 'read'), array(&$this, 'write'), array(&$this, 'destroy'), array(&$this, 'gc') ); register_shutdown_function('session_write_close'); // start the session @session_start(); } function stop() { $new_sess_id = $this->regenerate_id(true); session_unset(); session_destroy(); return $new_sess_id; } function regenerate_id($return_val=false) { // saves the old session's id $oldSessionID = session_id(); // regenerates the id // this function will create a new session, with a new id and containing the data from the old session // but will not delete the old session session_regenerate_id(); // because the session_regenerate_id() function does not delete the old session, // we have to delete it manually //$this->destroy($oldSessionID); //ADDED by aaron // returns the new session id if($return_val) { return session_id(); } } function open($save_path, $session_name) { // global $gf; // $gf->debug_this($gf, "GF: Opening Session"); // change the next values to match the setting of your mySQL database $mySQLHost = "localhost"; $mySQLUsername = "user"; $mySQLPassword = "pass"; $mySQLDatabase = "sessions"; $link = mysql_connect($mySQLHost, $mySQLUsername, $mySQLPassword); if (!$link) { die ("Could not connect to database!"); } $dbc = mysql_select_db($mySQLDatabase, $link); if (!$dbc) { die ("Could not select database!"); } return true; } function close() { mysql_close(); return true; } function read($session_id) { $result = @mysql_query(" SELECT session_data FROM session_data WHERE session_id = '".$session_id."' AND http_user_agent = '".$_SERVER["HTTP_USER_AGENT"]."' AND session_expire > '".time()."' "); // if anything was found if (is_resource($result) && @mysql_num_rows($result) > 0) { // return found data $fields = @mysql_fetch_assoc($result); // don't bother with the unserialization - PHP handles this automatically return unserialize($fields["session_data"]); } // if there was an error return an empty string - this HAS to be an empty string return ""; } function write($session_id, $session_data) { // global $gf; // first checks if there is a session with this id $result = @mysql_query(" SELECT * FROM session_data WHERE session_id = '".$session_id."' "); // if there is if (@mysql_num_rows($result) > 0) { // update the existing session's data // and set new expiry time $result = @mysql_query(" UPDATE session_data SET session_data = '".serialize($session_data)."', session_expire = '".(time() + $this->sessionLifetime)."' WHERE session_id = '".$session_id."' "); // if anything happened if (@mysql_affected_rows()) { // return true return true; } } else // if this session id is not in the database { // $gf->debug_this($gf, "inside dbSession, trying to write to db because session id was NOT in db"); $sql = " INSERT INTO session_data ( session_id, http_user_agent, session_data, session_expire ) VALUES ( '".serialize($session_id)."', '".$_SERVER["HTTP_USER_AGENT"]."', '".$session_data."', '".(time() + $this->sessionLifetime)."' ) "; // insert a new record $result = @mysql_query($sql); // if anything happened if (@mysql_affected_rows()) { // return an empty string return ""; } } // if something went wrong, return false return false; } function destroy($session_id) { // deletes the current session id from the database $result = @mysql_query(" DELETE FROM session_data WHERE session_id = '".$session_id."' "); // if anything happened if (@mysql_affected_rows()) { // return true return true; } // if something went wrong, return false return false; } function gc($maxlifetime) { // it deletes expired sessions from database $result = @mysql_query(" DELETE FROM session_data WHERE session_expire < '".(time() - $maxlifetime)."' "); } } //End of Class $session = new dbsession(); ?>

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PHP Form not working IE and Chrome, but fine in FF

- by RO

<? if(isset($_POST['accountUser']) && isset($_POST['accountPassword'])) { include("dbase.php"); include("settings.php"); if ($_POST['accountType']=="member") { $database="chatusers"; } else if ($_POST['accountType']=="model") { $database="chatmodels"; } else if ($_POST['accountType']=="studioop") { $database="chatoperators"; } $userExists=false; $result = mysql_query("SELECT id,user,password,status FROM $database WHERE status!='pending' AND status!='rejected' "); while($row = mysql_fetch_array($result)) { $tempUser=$row["user"]; $tempPass=$row["password"]; $tempId=$row["id"]; if ($_POST['accountUser']==$tempUser && md5($_POST['accountPassword'])==$tempPass) { if ($row["status"]=="blocked") { $userExists=true; $errorMsg="Account is blocked, please contact the administrator for more details"; } else { $userExists=true; $currentTime=time(); mysql_query("UPDATE $database SET lastLogIn='$currentTime' WHERE id = '$tempId' LIMIT 1"); setcookie("usertype", $database, time()+3600); setcookie("id", $tempId, time()+3600); header("Location: cp/$database/"); } } } if (!$userExists){ $errorMsg="Wrong Username or password"; } } else if (isset($_GET['from']) && $_GET['from']=="recoverpass"){ $errorMsg="Your new password has been sent to your mail"; } else { $errorMsg="Please complete username and password fields"; } ?> <? include("_main.header.php"); ?> <table width="720" height="200" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td align="center" valign="middle"><form action="login.php" method="post" enctype="application/x-www-form-urlencoded" name="form1"> <p> </p> <table width="720" border="0" align="center"> <tr> <td colspan="2"><p align="left"> <span class="error"><?php if ( isset($errorMsg) && $errorMsg!=""){ echo $errorMsg; } ?></span> <br> <br> </p></td> </tr> <tr> <td width="210" align="right" valign="top" class="form_definitions"><div align="right">Username:</div></td> <td align="left" valign="top"><input name="accountUser" type="text" id="accountUser" value="<? echo $_GET[user];?>" size="24" maxlength="24"></td> </tr> <tr> <td align="right" valign="top" class="form_definitions"><div align="right">Password:</div></td> <td align="left" valign="top"><input name="accountPassword" type="password" id="accountPassword2" size="24" maxlength="24"></td> </tr> <tr> <td align="right" valign="top" class="form_definitions"><div align="right">Account type:</div></td> <td align="left" valign="top"> <select name="accountType" id="select"> <option value="member" selected>Member</option> <option value="model">Model</option> <option value="studioop">Studio Operator</option> </select> <div align="left"></div></td> </tr> <tr> <td align="right" valign="top" class="form_definitions"> </td> <td align="left" valign="top"> <input type="submit" name="Submit" value="Log In to your account"> <div align="left"></div></td> </tr> <tr> <td align="right" valign="top" class="form_definitions"> </td> <td align="left" valign="top"><a href="lostpassword.php" class="left">Lost Password? Press Here!</a></td> </tr> </table> </form></td> </tr> </table> <br> <br> <? include("_main.footer.php"); ?>

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NOOB Memory Problem - EXC_BAD_ACCESS

- by Michael Bordelon

I have been banging my head against the wall for a couple days and need some help. I have a feeling that I am doing something really silly here, but I cannot find the issue. This is the controller for a table view. I put the SQL in line to simplify it as part of the troubleshooting of this error. Normally, it would be in an accessor method in a model class. It gets through the SQL read just fine. Finds the two objects, loads them into the todaysWorkout array and then builds the cells for the table view. The table view actually comes up on the scree and then it throws the EXC_BAD_ACCESS. I ran instruments and it shows the following: 0 CFString Malloc 1 00:03.765 0x3946470 176 Foundation -[NSPlaceholderString initWithFormat:locale:arguments:] 1 CFString Autorelease 00:03.765 0x3946470 0 Foundation NSRecordAllocationEvent 2 CFString CFRelease 0 00:03.767 0x3946470 0 Bring It -[WorkoutViewController viewDidLoad] 3 CFString Zombie -1 00:03.917 0x3946470 0 Foundation NSPopAutoreleasePool Here is the source code for the controller. I left it all in there just in case there is something extraneous causing the problem. I sincerely appreciate any help I can get: #import "WorkoutViewController.h" #import "MoveListViewController.h" #import "Profile.h" static sqlite3 *database = nil; @implementation WorkoutViewController @synthesize todaysWorkouts; @synthesize woNoteCell; @synthesize bi; //@synthesize woSwitchCell; - (void)viewDidLoad { [super viewDidLoad]; bi = [[BIUtility alloc] init]; todaysWorkouts = [[NSMutableArray alloc] init]; NSString *query; sqlite3_stmt *statement; //open the database if (sqlite3_open([[BIUtility getDBPath] UTF8String], &database) != SQLITE_OK) { sqlite3_close(database); NSAssert(0, @"Failed to opendatabase"); } query = [NSString stringWithFormat:@"SELECT IWORKOUT.WOINSTANCEID, IWORKOUT.WORKOUTID, CWORKOUTS.WORKOUTNAME FROM CWORKOUTS JOIN IWORKOUT ON IWORKOUT.WORKOUTID = CWORKOUTS.WORKOUTID AND DATE = '%@'", [BIUtility todayDateString]]; if (sqlite3_prepare_v2(database, [query UTF8String], -1, &statement, nil) == SQLITE_OK) { while (sqlite3_step(statement) == SQLITE_ROW) { Workout *wo = [[Workout alloc] init]; wo.woInstanceID = sqlite3_column_int(statement, 0); wo.workoutID = sqlite3_column_int(statement, 1); wo.workoutName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 2)]; [todaysWorkouts addObject:wo]; [wo release]; } sqlite3_finalize(statement); } if(database) sqlite3_close(database); [query release]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { //todaysWorkouts = [BIUtility todaysScheduledWorkouts]; static NSString *noteCellIdentifier = @"NoteCellIdentifier"; UITableViewCell *cell; if (indexPath.section < ([todaysWorkouts count])) { cell = [tableView dequeueReusableCellWithIdentifier:@"OtherCell"]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier: @"OtherCell"] autorelease]; cell.accessoryType = UITableViewCellAccessoryNone; } if (indexPath.row == 0) { Workout *wo = [todaysWorkouts objectAtIndex:indexPath.section]; [cell.textLabel setText:wo.workoutName]; } else { [cell.textLabel setText:@"Completed?"]; [cell.textLabel setFont:[UIFont fontWithName:@"Arial" size:15]]; [cell.textLabel setTextColor:[UIColor blueColor]]; } } else { cell = (NoteCell *)[tableView dequeueReusableCellWithIdentifier:noteCellIdentifier]; if (cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"NoteCell" owner:self options:nil]; cell = [nib objectAtIndex:0]; } } return cell; //[cell release]; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSUInteger row = [indexPath row]; if (indexPath.section < ([todaysWorkouts count]) && (row == 0)) { MoveListViewController *moveListController = [[MoveListViewController alloc] initWithStyle:UITableViewStylePlain]; moveListController.workoutID = [[todaysWorkouts objectAtIndex:indexPath.section] workoutID]; moveListController.workoutName = [[todaysWorkouts objectAtIndex:indexPath.section] workoutName]; moveListController.woInstanceID = [[todaysWorkouts objectAtIndex:indexPath.section] woInstanceID]; NSLog(@"Workout Selected: %@", [[todaysWorkouts objectAtIndex:indexPath.section] workoutName]); Bring_ItAppDelegate *delegate = [[UIApplication sharedApplication] delegate]; [delegate.workoutNavController pushViewController:moveListController animated:YES]; } else { UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath]; if (indexPath.section < ([todaysWorkouts count]) && (row == 1)) { if (cell.accessoryType == UITableViewCellAccessoryNone) { cell.accessoryType = UITableViewCellAccessoryCheckmark; } else { cell.accessoryType = UITableViewCellAccessoryNone; } } } [tableView deselectRowAtIndexPath:indexPath animated:YES]; } - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { NSInteger h = 35; return h; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return ([todaysWorkouts count] + 1); //return ([todaysWorkouts count]); } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { if (section < ([todaysWorkouts count])) { return 2; } else { return 1; } } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { if (section < ([todaysWorkouts count])) { return @"Workout"; } else { return @"How Was Your Workout?"; } } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [todaysWorkouts release]; [bi release]; [super dealloc]; } @end

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Edit Contact code worked in 1.6 but doesn't work on Droid 2.1?

- by user225405

Hi All, I had some fairly simple code in my app to invoke Edit Contact activity on a known good contact index that worked in Android 1.6 but is broken for me now in Android 2.1 on the Droid. I built a sample activity/app 'EdCon' to show this: package com.jbh; import android.app.Activity; import android.content.Intent; import android.net.Uri; import android.os.Bundle; public class EdCon extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // Build an intent to edit a known good contact index Intent i; i = new Intent(Intent.ACTION_EDIT); i.setData(Uri.parse("content://contacts/people/10")); startActivity(i); } } When I run this on my G1 running 1.6 it works as expected i.e. brings up the Edit Contact screen for the known index and then I can hit BACK to return to "Hello World, EdCon". When I run this on the Droid under 2.1 I get the following: 05-07 15:35:57.787: INFO/ActivityManager(1013): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.jbh/.EdCon } 05-07 15:35:57.826: DEBUG/AndroidRuntime(13780): Shutting down VM 05-07 15:35:57.826: DEBUG/dalvikvm(13780): DestroyJavaVM waiting for non-daemon threads to exit 05-07 15:35:57.928: DEBUG/dalvikvm(13780): DestroyJavaVM shutting VM down 05-07 15:35:57.928: DEBUG/dalvikvm(13780): HeapWorker thread shutting down 05-07 15:35:57.928: DEBUG/dalvikvm(13780): HeapWorker thread has shut down 05-07 15:35:57.928: DEBUG/jdwp(13780): JDWP shutting down net... 05-07 15:35:57.928: DEBUG/jdwp(13780): Got wake-up signal, bailing out of select 05-07 15:35:57.928: INFO/dalvikvm(13780): Debugger has detached; object registry had 1 entries 05-07 15:35:57.928: DEBUG/dalvikvm(13780): VM cleaning up 05-07 15:35:57.935: INFO/ActivityManager(1013): Start proc com.jbh for activity com.jbh/.EdCon: pid=13802 uid=10052 gids={1015} 05-07 15:35:57.967: ERROR/AndroidRuntime(13780): ERROR: thread attach failed 05-07 15:35:58.053: INFO/ActivityThread(13792): Publishing provider com.android.vending.SuggestionsProvider: com.android.vending.SuggestionsProvider 05-07 15:35:58.154: INFO/dalvikvm(13802): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=38) 05-07 15:35:58.209: DEBUG/dalvikvm(13780): LinearAlloc 0x0 used 639500 of 5242880 (12%) 05-07 15:35:58.365: INFO/dalvikvm(13802): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=18) 05-07 15:35:58.639: INFO/ActivityManager(1013): Starting activity: Intent { act=android.intent.action.EDIT dat=content://contacts/people/10 cmp=com.android.contacts/.ui.EditContactActivity } 05-07 15:35:58.975: DEBUG/dalvikvm(13137): GC freed 2902 objects / 166768 bytes in 61ms 05-07 15:35:59.100: DEBUG/vending(13792): com.android.vending.LocalDbSyncService.run(): Syncing local DB with package manager... 05-07 15:35:59.100: DEBUG/vending(13792): com.android.vending.LocalDbSyncService.syncLocalDbWithPackageManager(): No INSTALLING or UNINSTALLING assets. 05-07 15:35:59.115: INFO/ActivityManager(1013): Displayed activity com.android.contacts/.ui.EditContactActivity: 387 ms (total 1296 ms) 05-07 15:35:59.185: DEBUG/Sources(13137): Creating external source for type=com.facebook.auth.login, packageName=com.facebook.katana 05-07 15:35:59.225: DEBUG/vending(13792): com.android.vending.LocalDbSyncService.run(): Syncing done. 05-07 15:35:59.232: WARN/dalvikvm(13137): threadid=27: thread exiting with uncaught exception (group=0x4001b180) 05-07 15:35:59.232: ERROR/AndroidRuntime(13137): Uncaught handler: thread AsyncTask #1 exiting due to uncaught exception 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): java.lang.RuntimeException: An error occured while executing doInBackground() 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.os.AsyncTask$3.done(AsyncTask.java:200) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.util.concurrent.FutureTask.setException(FutureTask.java:124) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.lang.Thread.run(Thread.java:1096) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): Caused by: android.database.sqlite.SQLiteException: no such column: raw_contact_id: , while compiling: SELECT account_name, account_type, sourceid, version, dirty, data_id, res_package, mimetype, data1, data2, data3, data4, data5, data6, data7, data8, data9, data10, data11, data12, data13, data14, data15, data_sync1, data_sync2, data_sync3, data_sync4, _id, is_primary, is_super_primary, data_version, group_sourceid, sync1, sync2, sync3, sync4, deleted, contact_id, starred, is_restricted FROM contact_entities_view WHERE (1) AND (raw_contact_id=10) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.database.sqlite.SQLiteProgram.native_compile(Native Method) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.database.sqlite.SQLiteProgram.compile(SQLiteProgram.java:110) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.database.sqlite.SQLiteProgram.(SQLiteProgram.java:59) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.database.sqlite.SQLiteQuery.(SQLiteQuery.java:49) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:49) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1221) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.database.sqlite.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:316) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.providers.contacts.ContactsProvider2.query(ContactsProvider2.java:3850) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.providers.contacts.ContactsProvider2.query(ContactsProvider2.java:3840) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.providers.contacts.ContactsProvider2$RawContactsEntityIterator.(ContactsProvider2.java:4498) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.providers.contacts.ContactsProvider2.queryEntities(ContactsProvider2.java:4751) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.content.ContentProvider$Transport.queryEntities(ContentProvider.java:140) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.content.ContentProviderClient.queryEntities(ContentProviderClient.java:98) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.content.ContentResolver.queryEntities(ContentResolver.java:296) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.contacts.model.EntitySet.fromQuery(EntitySet.java:72) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.contacts.ui.EditContactActivity$QueryEntitiesTask.doInBackground(EditContactActivity.java:191) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.contacts.ui.EditContactActivity$QueryEntitiesTask.doInBackground(EditContactActivity.java:154) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at com.android.contacts.util.WeakAsyncTask.doInBackground(WeakAsyncTask.java:45) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at android.os.AsyncTask$2.call(AsyncTask.java:185) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 05-07 15:35:59.295: ERROR/AndroidRuntime(13137): ... 4 more 05-07 15:35:59.303: INFO/Process(1013): Sending signal. PID: 13137 SIG: 3 05-07 15:35:59.303: INFO/dalvikvm(13137): threadid=7: reacting to signal 3 05-07 15:35:59.303: ERROR/dalvikvm(13137): Unable to open stack trace file '/data/anr/traces.txt': Permission denied 05-07 15:35:59.506: INFO/DumpStateReceiver(1013): Added state dump to 1 crashes 05-07 15:36:07.053: DEBUG/dalvikvm(12901): GC freed 389 objects / 25056 bytes in 145ms 05-07 15:36:17.287: DEBUG/dalvikvm(11649): GC freed 154 objects / 6816 bytes in 136ms 05-07 15:36:22.365: DEBUG/dalvikvm(13574): GC freed 348 objects / 67848 bytes in 112ms 05-07 15:36:27.451: DEBUG/dalvikvm(11836): GC freed 267 objects / 17432 bytes in 65ms 05-07 15:36:32.553: DEBUG/dalvikvm(12757): GC freed 1888 objects / 92440 bytes in 67ms 05-07 15:36:38.803: INFO/power(1013): * set_screen_state 0 05-07 15:36:38.813: DEBUG/SurfaceFlinger(1013): About to give-up screen, flinger = 0x114c30 05-07 15:36:38.826: DEBUG/Sensors(1013): using accelerometer (name=accelerometer) 05-07 15:36:38.834: DEBUG/PhoneWindow(13137): couldn't save which view has focus because the focused view android.widget.ScrollView@44883558 has no id. 05-07 15:36:38.865: DEBUG/WifiService(1013): ACTION_SCREEN_OFF 05-07 15:36:38.889: DEBUG/WifiService(1013): setting ACTION_DEVICE_IDLE timer for 900000ms 05-07 15:36:44.107: DEBUG/dalvikvm(1013): GC freed 7351 objects / 521440 bytes in 130ms 05-07 15:36:49.373: DEBUG/dalvikvm(13553): GC freed 321 objects / 12056 bytes in 102ms The no such column: raw_contact_id: looks like the issue but I'm not sure how or why that would happen or what it means. Any help appreciated! [email protected]

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Am I just not understanding TDD unit testing (Asp.Net MVC project)?

- by KallDrexx

I am trying to figure out how to correctly and efficiently unit test my Asp.net MVC project. When I started on this project I bought the Pro ASP.Net MVC, and with that book I learned about TDD and unit testing. After seeing the examples, and the fact that I work as a software engineer in QA in my current company, I was amazed at how awesome TDD seemed to be. So I started working on my project and went gun-ho writing unit tests for my database layer, business layer, and controllers. Everything got a unit test prior to implementation. At first I thought it was awesome, but then things started to go downhill. Here are the issues I started encountering: I ended up writing application code in order to make it possible for unit tests to be performed. I don't mean this in a good way as in my code was broken and I had to fix it so the unit test pass. I mean that abstracting out the database to a mock database is impossible due to the use of linq for data retrieval (using the generic repository pattern). The reason is that with linq-sql or linq-entities you can do joins just by doing: var objs = select p from _container.Projects select p.Objects; However, if you mock the database layer out, in order to have that linq pass the unit test you must change the linq to be var objs = select p from _container.Projects join o in _container.Objects on o.ProjectId equals p.Id select o; Not only does this mean you are changing your application logic just so you can unit test it, but you are making your code less efficient for the sole purpose of testability, and getting rid of a lot of advantages using an ORM has in the first place. Furthermore, since a lot of the IDs for my models are database generated, I proved to have to write additional code to handle the non-database tests since IDs were never generated and I had to still handle those cases for the unit tests to pass, yet they would never occur in real scenarios. Thus I ended up throwing out my database unit testing. Writing unit tests for controllers was easy as long as I was returning views. However, the major part of my application (and the one that would benefit most from unit testing) is a complicated ajax web application. For various reasons I decided to change the app from returning views to returning JSON with the data I needed. After this occurred my unit tests became extremely painful to write, as I have not found any good way to write unit tests for non-trivial json. After pounding my head and wasting a ton of time trying to find a good way to unit test the JSON, I gave up and deleted all of my controller unit tests (all controller actions are focused on this part of the app so far). So finally I was left with testing the Service layer (BLL). Right now I am using EF4, however I had this issue with linq-sql as well. I chose to do the EF4 model-first approach because to me, it makes sense to do it that way (define my business objects and let the framework figure out how to translate it into the sql backend). This was fine at the beginning but now it is becoming cumbersome due to relationships. For example say I have Project, User, and Object entities. One Object must be associated to a project, and a project must be associated to a user. This is not only a database specific rule, these are my business rules as well. However, say I want to do a unit test that I am able to save an object (for a simple example). I now have to do the following code just to make sure the save worked: User usr = new User { Name = "Me" }; _userService.SaveUser(usr); Project prj = new Project { Name = "Test Project", Owner = usr }; _projectService.SaveProject(prj); Object obj = new Object { Name = "Test Object" }; _objectService.SaveObject(obj); // Perform verifications There are many issues with having to do all this just to perform one unit test. There are several issues with this. For starters, if I add a new dependency, such as all projects must belong to a category, I must go into EVERY single unit test that references a project, add code to save the category then add code to add the category to the project. This can be a HUGE effort down the road for a very simple business logic change, and yet almost none of the unit tests I will be modifying for this requirement are actually meant to test that feature/requirement. If I then add verifications to my SaveProject method, so that projects cannot be saved unless they have a name with at least 5 characters, I then have to go through every Object and Project unit test to make sure that the new requirement doesn't make any unrelated unit tests fail. If there is an issue in the UserService.SaveUser() method it will cause all project, and object unit tests to fail and it the cause won't be immediately noticeable without having to dig through the exceptions. Thus I have removed all service layer unit tests from my project. I could go on and on, but so far I have not seen any way for unit testing to actually help me and not get in my way. I can see specific cases where I can, and probably will, implement unit tests, such as making sure my data verification methods work correctly, but those cases are few and far between. Some of my issues can probably be mitigated but not without adding extra layers to my application, and thus making more points of failure just so I can unit test. Thus I have no unit tests left in my code. Luckily I heavily use source control so I can get them back if I need but I just don't see the point. Everywhere on the internet I see people talking about how great TDD unit tests are, and I'm not just talking about the fanatical people. The few people who dismiss TDD/Unit tests give bad arguments claiming they are more efficient debugging by hand through the IDE, or that their coding skills are amazing that they don't need it. I recognize that both of those arguments are utter bullocks, especially for a project that needs to be maintainable by multiple developers, but any valid rebuttals to TDD seem to be few and far between. So the point of this post is to ask, am I just not understanding how to use TDD and automatic unit tests?

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delete row from mysql through generated table with records

- by HennySmafter

I am using 2 pages. On one page it generates a table with the records and a delete button. After pressing delete it goes to the second page which should delete the record. But it doesn't. Below is the code that I am using. PS: The code is adapted from a tutorial I found through Google a while ago. delete_overzicht.php <?php // Load Joomla! configuration file require_once('../../../configuration.php'); // Create a JConfig object $config = new JConfig(); // Get the required codes from the configuration file $server = $config->host; $username = $config->user; $password = $config->password; $database = $config->db; // Connect to db $con = mysqli_connect($server,$username,$password,$database); if (!$con){ die('Could not connect: ' . mysqli_error($con)); } mysqli_select_db($con,$database); // Get results $result = mysqli_query($con,"SELECT * FROM cypg8_overzicht"); echo "<table border='1' id='example' class='tablesorter'><thead><tr><th>Formulier Id</th><th>Domeinnaam</th><th>Bedrijfsnaam</th><th>Datum</th><th>Periode</th><th>Subtotaal</th><th>Dealernaam</th><th>Verwijderen</th></tr></thead><tbody>"; while($row = mysqli_fetch_array($result)) { echo "<tr>"; echo "<td>" . $row['formuliernummer'] . "</td>"; echo "<td>" . $row['domeinnaam'] . "</td>"; echo "<td>" . $row['bedrijfsnaam'] . "</td>"; echo "<td>" . $row['datum'] . "</td>"; echo "<td>" . $row['periode'] . "</td>"; echo "<td> € " . $row['subtotaal'] . "</td>"; echo "<td>" . $row['dealercontactpersoon'] . "</td>"; echo "<td><a href='delete.php?id=" . $row['id'] . "'>Verwijderen </a></td>"; echo "</tr>"; } echo "</tbody></table>"; mysqli_close($con); ?> delete.php <?php // Load Joomla! configuration file require_once('../../../configuration.php'); // Create a JConfig object $config = new JConfig(); // Get the required codes from the configuration file $server = $config->host; $username = $config->user; $password = $config->password; $database = $config->db; // Connect to db $con = mysqli_connect($server,$username,$password,$database); if (!$con){ die('Could not connect: ' . mysqli_error($con)); } mysqli_select_db($con,$database); // Check whether the value for id is transmitted if (isset($_GET['id'])) { // Put the value in a separate variable $id = $_GET['id']; // Query the database for the details of the chosen id $result = mysqli_query($con,"DELETE * FROM cypg8_overzicht WHERE id = $id"); } else { die("No valid id specified!"); } ?> Thanks to everyone who is willing to help!

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Cannot connect to Amazon RDS

- by Justin

I have created an Amazon RDS database under the free tier (SQL Server Express, micro instance etc.), but I cannot connect to the server using Microsoft SQL Server Management Studio. I have configured the security group of the database instance (default) to accept my IP address. I am following the connection guide from amazon located here The error I receive is: Cannot connect to databaseName.c***rnqg***v.us-east-1.rds.amazonaws.com,1433. A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.) (Microsoft SQL Server, Error: 10060) I am using Server type "Database Engine" and using SQL Server Authentication.

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filestream restore very slow to DR server

- by Jim

We are backing up a database containing 100GB of filestream data. The backup takes under two hours to write. Restoring the same database to the DR environment is taking over forty hours. We don't have the same problem with other (non-filestream) databases, including some that are much larger. How do we try and get to the bottom of the problem. The database is in full recovery mode, and we are doing a full backup. Thanks.

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Cognos 8.3 and Oracle11g

- by hiddenkirby

When i place ojdbc5.jar in the c8\webapps\p2pd\WEB-INF\lib directory... i receive the error below. And yes the content store is on an oracle 11g RAC database. I am running Oracle11g Client. Cognos version is 8.3 SP4. [Content Manager database connection] 1. [ ERROR ] The database connection failed. 2. [ ERROR ] Content Manager failed to start because it could not load driver "oracle.jdbc.driver.OracleDriver". Any help would be greatly appreciated.

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DPM 2010 RC Mailbox Recovery Fails

- by ITGuy24

I am testing DPM 2010 with Exchange 2010. I am attempting to restore a single mailbox from a previous backup to a Recovery Database. I created and mounting the Recovery Database on the Exchange 2010 server and set the overwrite property. When I run the restore for the mailbox and point it to the recovery databse I get the following error. The recovery jobs for Exchange Mailbox Database MailboxDatabase01 that started at with the destination of EXCHANGE2010.domain.com, have completed. Most or all jobs failed to recover the requested data. (ID 3111) DPM encountered an error while performaing an operation for E:\DatabaseFiles\MailboxDatabase01.edb on EXCHANGE2010.domain.com (ID 2033 Details: The process cannot access the file because it is being used by another process (0x80070020)) MailboxDatabase01 is one of our MDBs and not the RDB I setup for the recovery. I am confused why it is even trying to access this as I have triple checked that the recovery is pointed to the RDB. Any idea what I am doing wrong?

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MySQL Federated Tables Escaped Table Names

- by Gordon

I am trying to use MySQL federated tables. The problem is that the documentation specified at http://dev.mysql.com/doc/refman/5.0/en/federated-use.html says that a federated table should be created using the following format for the CONNECTION parameter: scheme://user_name[:password]@host_name[:port_num]/db_name/tbl_name E.G. CONNECTION='mysql://username:password@hostname:port/database/tablename' CONNECTION='mysql://username@hostname/database/tablename' CONNECTION='mysql://username:password@hostname/database/tablename' The problem is that the table I am trying to connect to has non-standard characters in it and I cannot find the proper way to scape them in the connections tring. For example, a table named `Table (one)` . Which has the space and the parenthesis, requiring backticks surrounding it inside any SQL code. Anyone know the proper way to do this?

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Cognos 8.3 and Oracle11g

- by hiddenkirby

When i place ojdbc5.jar in the c8\webapps\p2pd\WEB-INF\lib directory... i receive the error below. And yes the content store is on an oracle 11g RAC database. I am running Oracle11g Client. Cognos version is 8.3 SP4. [Content Manager database connection] 1. [ ERROR ] The database connection failed. 2. [ ERROR ] Content Manager failed to start because it could not load driver "oracle.jdbc.driver.OracleDriver". Any help would be greatly appreciated.

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